A. I think it is because Luca thought it was unholy to kill an innocent baby, however he did not want the baby's race to be promulgated (it is unclear if this was Luca's baby by an Irish woman whom he later killed) so he made someone else, Filomena the midwife throw the baby in the furnace.
Q. What is the "other" story about Luca and the Capone gang which is told in the novel but not in the film?
"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"
